Step 1: Project and config (project)

Updates the .uproject file and the project's .ini files. This step only edits files, so it can also run from another 5.8 project with -target (see Workflow).

Done automatically

• EngineAssociation set to 5.8.
• TargetPlatforms renamed: WindowsNoEditor to Windows, MacNoEditor to Mac, LinuxNoEditor to Linux, LinuxAArch64NoEditor to LinuxArm64.
• Plugins removed in 5.8 are removed from the .uproject; replaced plugins are swapped for their successor when they were enabled.
• Disabled entries of plugins that no longer exist are removed.
• Plugins required by classes that moved to a plugin are enabled (for example XRBase, needed when the project references HeadMountedDisplayFunctionLibrary).
• Chaos Vehicles is enabled when the project used PhysX Vehicles (this sets restart required).
• .ini rules of the project group, including the Android and iOS minimums and the packaging denylist keys.

Reported for you

• Enabled plugins that 5.8 does not know (usually third-party plugins that need a 5.8 build).
• Features of removed plugins the project used (Manual: what used them must be rebuilt).

Rule tables

plugins.json (69 plugins: 59 removed, 10 replaced) and the project rules of config.json.

Examples

Before (4.27)	After (5.8)
plugin PhysXVehicles	ChaosVehiclesPlugin
plugin OculusVR, SteamVR	OpenXR
plugin LightPropagationVolume	removed (use Lumen or baked lighting)
IniKeyBlacklist in [/Script/UnrealEd.ProjectPackagingSettings]	IniKeyDenylist
Android MinSDKVersion below 26	26 (the 5.8 minimum)
iOS MinimumiOSVersion=IOS_12	IOS_Minimum (4.27 values do not exist in 5.8)
Android bBuildForArmV7	removed (32-bit ARM is no longer supported)